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PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference最新文献

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Finite element analysis of copper loss in 1-10 MHz transformers 1- 10mhz变压器铜损耗的有限元分析
PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference Pub Date : 1988-04-11 DOI: 10.1109/PESC.1988.18250
A. Goldberg, J. Kassakian, M. Schlecht
{"title":"Finite element analysis of copper loss in 1-10 MHz transformers","authors":"A. Goldberg, J. Kassakian, M. Schlecht","doi":"10.1109/PESC.1988.18250","DOIUrl":"https://doi.org/10.1109/PESC.1988.18250","url":null,"abstract":"Issues related to the copper loss in 1-10 MHz power transformers are discussed. The relationship between current distribution and transformer structure is investigated using finite-element analysis, to understand how to minimize copper loss caused by proximity effects. It is concluded that a slotted transformer design should be used if the magnetizing current is relatively large. A concentrated-gap and a distributed-gap structure give comparable results, although the distributed-gap design relies strongly on the exact permeability of the material and could suffer from higher core losses because all of the energy is stored in the magnetic material. In either case, the depth of the slot should be about 40% of its width.<<ETX>>","PeriodicalId":283605,"journal":{"name":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124563344","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 40
Switching losses and and operational frequency limitations of GTO thyristors in PWM inverters PWM逆变器中GTO晶闸管的开关损耗和工作频率限制
PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference Pub Date : 1988-04-11 DOI: 10.1109/PESC.1988.18226
K. Heumann, M. Jung
{"title":"Switching losses and and operational frequency limitations of GTO thyristors in PWM inverters","authors":"K. Heumann, M. Jung","doi":"10.1109/PESC.1988.18226","DOIUrl":"https://doi.org/10.1109/PESC.1988.18226","url":null,"abstract":"The losses of GTO thyristors in pulse width-modulated (PWM) inverters are investigated on the basis of the theoretical switching waveforms. Snubber losses, derived from the dynamic device parameters, prove to increase overproportionately with the inverter power, and a novel low-loss snubber is presented. Other limitations on the operational frequency are demonstrated. Theoretically obtained switching losses of GTO thyristors with and without snubbers show good agreement with experimental test data.<<ETX>>","PeriodicalId":283605,"journal":{"name":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124594131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Modelling and analysis of DC-DC converters control by power equalization 功率均衡控制DC-DC变换器的建模与分析
PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference Pub Date : 1988-04-11 DOI: 10.1109/PESC.1988.18231
D. Gouttenegre, B. Velaerts, T. Michaux
{"title":"Modelling and analysis of DC-DC converters control by power equalization","authors":"D. Gouttenegre, B. Velaerts, T. Michaux","doi":"10.1109/PESC.1988.18231","DOIUrl":"https://doi.org/10.1109/PESC.1988.18231","url":null,"abstract":"An improved current-injected modelling method is used to obtain in an easy but accurate way the transfer functions of a DC-DC converter controlled by output equalization. The approach has been used to develop an output voltage regulator with a near-optimum behavior that does not need much hardware. The principle is very general and could be used in other applications. The problem of open-loop instability and the effect of the input filter and its stability are investigated. Experimental results for the output voltage regulator are presented.<<ETX>>","PeriodicalId":283605,"journal":{"name":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124618651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A cascaded Schwarz converter for high frequency power distribution 用于高频功率分配的级联施瓦茨变换器
PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference Pub Date : 1988-04-11 DOI: 10.1109/PESC.1988.18262
B. Ray, T. Stuart
{"title":"A cascaded Schwarz converter for high frequency power distribution","authors":"B. Ray, T. Stuart","doi":"10.1109/PESC.1988.18262","DOIUrl":"https://doi.org/10.1109/PESC.1988.18262","url":null,"abstract":"It is shown that two Schwarz converters in cascade provide a very reliable 20 kHz source that features zero current commutation, constant frequency, and fault-tolerant operation, meeting requirements for spacecraft applications. A steady-state analysis of the converter is presented, and equations for the steady-state performance are derived. Fault-current limiting is discussed. Experimental results are presented for a 900 W version, which has been successfully tested under no-load, full-load, and short-circuit conditions.<<ETX>>","PeriodicalId":283605,"journal":{"name":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124648085","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Modelling and simulation of power MOSFETs and power diodes 功率mosfet和功率二极管的建模与仿真
PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference Pub Date : 1988-04-11 DOI: 10.1109/PESC.1988.18118
C.H. Xu, D. Schroder
{"title":"Modelling and simulation of power MOSFETs and power diodes","authors":"C.H. Xu, D. Schroder","doi":"10.1109/PESC.1988.18118","DOIUrl":"https://doi.org/10.1109/PESC.1988.18118","url":null,"abstract":"A model of a power MOSFET has been improved and implemented in SPICE. A method for parameter extraction from electrical measurements has been developed. The model is simple and accurate, and the simulation results show good agreement with the measurements. The switching behavior of the MOSFETs has been simulated and analyzed, and the parasitic oscillation in parallel circuits has been investigated. A way to avoid this undesirable effect is proposed and proved. The development of an electrical analysis model for the p-i-n power diode is reported. The internal processes during switching have been investigated using physical device simulation, and a one-dimensional solution has been obtained.<<ETX>>","PeriodicalId":283605,"journal":{"name":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129736948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 57
Megawatt GTO-inverter with three-level PWM control and regenerative snubber circuits 兆瓦级gto逆变器，具有三电平PWM控制和再生缓冲电路
PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference Pub Date : 1988-04-11 DOI: 10.1109/PESC.1988.18270
J. Holtz, S. Salama
{"title":"Megawatt GTO-inverter with three-level PWM control and regenerative snubber circuits","authors":"J. Holtz, S. Salama","doi":"10.1109/PESC.1988.18270","DOIUrl":"https://doi.org/10.1109/PESC.1988.18270","url":null,"abstract":"Regenerative turn-on and turn-of snubbers for a three-level PWM inverter using gate turn-off thyristors (GTOs) are analyzed and discussed. Problems encountered in high-power GTO inverters, namely, trapped energy in the snubbers and switching losses, are discussed. The circuit configuration and operation are described and a comparison with a two-level inverter is made. Experimental results from the operation at reduced voltage of a 4 MVA phase-leg circuit are presented.<<ETX>>","PeriodicalId":283605,"journal":{"name":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130591268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 24
Analysis of a resonant reset condition for a single-ended forward converter 单端正激变换器谐振复位条件分析
PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference Pub Date : 1988-04-11 DOI: 10.1109/PESC.1988.18238
N. Murakami, M. Yamasaki
{"title":"Analysis of a resonant reset condition for a single-ended forward converter","authors":"N. Murakami, M. Yamasaki","doi":"10.1109/PESC.1988.18238","DOIUrl":"https://doi.org/10.1109/PESC.1988.18238","url":null,"abstract":"The reset condition of a transformer core flux is analyzed for a single-ended forward converter operating in a resonant reset mode. Relationships between reset time and device parameters such as the main switch output capacitance are derived. As a result, the maximum frequency in a resonant reset mode can be predicted. The main results are: the resonance period of the main transformer flyback voltage is mainly determined by transformer magnetizing inductance, main switch output capacitance, and diode junction capacitance; the main transformer flux excursion is between the first and third quadrant in B-H characteristics; and the maximum operating frequency in the resonant reset mode is determined by the above parameters and volt-second products during main switch on-time. The validity of the analysis is confirmed by comparison with experimental results for a low-power DC-to-DC converter with a 50 V input and a 5 V, 2 A maximum output.<<ETX>>","PeriodicalId":283605,"journal":{"name":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121189234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 47
Nonlinear modelling of the PWM switch PWM开关的非线性建模
PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference Pub Date : 1988-04-11 DOI: 10.1109/PESC.1988.18232
R. Tymerski, V. Vorperian, F.C.Y. Lee, W. Baumann
{"title":"Nonlinear modelling of the PWM switch","authors":"R. Tymerski, V. Vorperian, F.C.Y. Lee, W. Baumann","doi":"10.1109/PESC.1988.18232","DOIUrl":"https://doi.org/10.1109/PESC.1988.18232","url":null,"abstract":"It is shown that nonlinearity due to the switching action in pulse width-modulated (PWM) DC-to-DC converters, DC-to-AC inverters or amplifiers, and input-current-shaping DC-to-DC converters can often conveniently be confined to a three-terminal structure referred to as the PWM switch. the PWM switch represents a static nonlinearity for which circuit models can easily be derived for frequencies harmonically related to the frequency of perturbation. Converter analysis can now be approached in an analogous way to ordinary transistor circuit analysis whereby the nonlinear three-terminal device is replaced by its circuit model. A first-order approximation of the model results in the small-signal model.<<ETX>>","PeriodicalId":283605,"journal":{"name":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125846125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 128
Power conditioning system using sliding model control 电力调节系统采用滑模控制
PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference Pub Date : 1988-04-11 DOI: 10.1109/PESC.1988.18189
M. Carpita, M. Marchesoni, M. Oberti, L. Puglisi
{"title":"Power conditioning system using sliding model control","authors":"M. Carpita, M. Marchesoni, M. Oberti, L. Puglisi","doi":"10.1109/PESC.1988.18189","DOIUrl":"https://doi.org/10.1109/PESC.1988.18189","url":null,"abstract":"A control system for power conditioning and uninterruptible power supply systems is presented. The design is based on the theory of variable-structure systems with sliding mode. Results of an analytical study and digital simulation of both the power and control systems are reported, showing good agreement. The high dynamics and the robustness of the implemented system, indicated by the simulation results, confirm the validity of the control scheme and suggest the possibility of adopting it for three-phase systems, variable frequency supplies, and measuring equipment.<<ETX>>","PeriodicalId":283605,"journal":{"name":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127919620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 67
Optimal control for electromagnet power supply 电磁体电源的最优控制
PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference Pub Date : 1988-04-11 DOI: 10.1109/PESC.1988.18159
K. Amanuma, K. Naruke, Y. Sakaki
{"title":"Optimal control for electromagnet power supply","authors":"K. Amanuma, K. Naruke, Y. Sakaki","doi":"10.1109/PESC.1988.18159","DOIUrl":"https://doi.org/10.1109/PESC.1988.18159","url":null,"abstract":"A method for designing an electromagnet power supply using the concepts of state-variable feedback control theory is investigated. Step and ramp responses for experimental models designed as type-one optimal servosystems are examined. These models exhibit properties as good as or better than those of supplies designed on the basis of classical control theory. A type-one servosystem combined with an active filter is proposed to reconcile two opposing requirements, that, high-speed response and low ripple current, which seem to be incompatible in a usual power-supply system with a passive filter. Although the type-one servosystem and active filter in the combined system are designed independently, neglecting the interaction between them, satisfactory control performance can be achieved.<<ETX>>","PeriodicalId":283605,"journal":{"name":"PESC '88 Record., 19th Annual IEEE Power Electronics Specialists Conference","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1988-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133907327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
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